Operation of Hvac System for Energy Savings and Economic Analysis

Abstract

In recent years, energy savings in airconditioning (A/C) systems has become one of the hot topics of applied energy towards innovative management and efficient utilization of the operating systems. Achieving thermal comfort with minimum energy consumption is the main concern for innovative designing of an air conditioning system. The A/C system is one of the chief contributors to energy consumption in warm and hot environments. An innovative design of an A/C operating system is essential to satisfy a high thermal performance and maintain the desired thermal comfort level. The aim of this work is to introduce innovative design of an operating system to simulate and experiment the thermal performance of A/C units for two identical houses located in Dhahran area of Saudi Arabia. In this case, the thermal model for both houses has been developed incorporating two different airconditioning operating systems. In the analysis, several physical properties and parameters, such as climate conditions and heat gain/loss, have been taken into account inside the house. Matlab/Simulink software is used to simulate the ON/OFF and the VFD air conditioning controller systems. LabView platform with the data acquisition is utilized for the experimental work to monitor the real time climate and electrical power data.

Optimization of VFD Operations for Transporting Equipment of Packages

“…Use of VFD contributes to electrical energy conservation at around 18.3 %-47.1 % and 36.3 %-51.7 % in air conditioning systems in winter and summer time, respectively, and it is more economical than a constant speed converter [2]. Another group of scientists [3] found out that energy savings with VFD reached 45 % in the air conditioning systems. As for the pump, fans, blowers, and compressor drives, the energy savings due to application of VDF can vary from 20 % to 70 % [4], [5].…”